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| author | Michał M. Sapka <michal@sapka.me> | 2023-02-23 15:16:17 +0100 |
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| committer | Michał M. Sapka <michal@sapka.me> | 2023-02-23 15:16:17 +0100 |
| commit | cbaf57fb19253e53197c248dda593442de52cdf5 (patch) | |
| tree | 18ad5cd1209f23c76bc04f84d2eb287470515e87 /content | |
| parent | 88179535e35e0b46e821afa1ea9a7eb1b18de03c (diff) | |
feat: article for 2023-02-23
Diffstat (limited to 'content')
| -rw-r--r-- | content/2023/pulse-width-modulation-on-oled-screens.md | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/content/2023/pulse-width-modulation-on-oled-screens.md b/content/2023/pulse-width-modulation-on-oled-screens.md new file mode 100644 index 0000000..e49ddd7 --- /dev/null +++ b/content/2023/pulse-width-modulation-on-oled-screens.md @@ -0,0 +1,15 @@ +--- +title: "Pulse Width Modulation on Oled Screens" +category: "hardware" +abstract: OLED flickers and some of us want to rip their eyes out +date: 2023-02-23T15:13:20+01:00 +year: 2023 +draft: false +tags: +- OLED +- PWM +- mobile-phones +--- +Today I've learned about PWM (Pulse Width Modulation) on OLED screens. It turns out that brightness changes don't apply to individual pixels - they always shine at 100%. So instead, what happens is that unless we set the brightness to 100%, the device rapidly switches off and on again backlight of the screen. + +We are talking about hundreds of hertz, and there is [math to understand](https://en.wikipedia.org/wiki/Pulse-width_modulation), but some people can see the flickering and are therefore unable to use OLED screens. |